I have renamed Windows Server 2008 R2 with all the steps using rendom,repadmin,gpupdate and successfully updated domain. My windows vista and above client got updated new domain when restarted. The help taken is from site http://www.youtube.com/watch?v=RwXyi1_UDWo But problem is with windows XP clients, they could not get new domain logon screen ans showing old domain name in logon screen.. Kindly anyone help me.........